Which statement best defines interval training?

Interval training is best defined as a method that alternates between periods of high-intensity exercise and low-intensity exercise or active recovery. This approach allows individuals to push their limits during the high-intensity segments while providing the body with the opportunity to recover during the low-intensity portions. The structure of interval training can enhance cardiovascular fitness, improve metabolism, and increase the efficiency of workouts, making it a popular choice among athletes and fitness enthusiasts.

The other options do not accurately capture the essence of interval training. Continuous low-intensity exercise for long durations refers to steady-state cardio, which focuses on maintaining a consistent effort without the variation that characterizes interval training. Focusing solely on strength training ignores the aerobic component that is central to interval training. Lastly, performing multiple exercises without rest might resemble circuit training, which lacks the specific alternating intensity framework inherent to interval training. Thus, the distinction of alternating between high and low intensity is what clearly defines interval training and sets it apart from these other workout methodologies.